You probably already know what I am about to suggest.
It would be highly useful to be able to conserve my colonists for future use, Simply lock them up, set an alarm for few months. And if you colony turns into ruin, you still would have a little hope that those awakened colonists would arise and save the day, rebuild your colony.
I have no idea how to implement it, I am eager to learn but maybe some nice modder would give me a hand in this matter?
Might want to suggest this in /Mod Requests/ instead of /Suggestions/ as this is for base game, and it wouldn't have much use in base game.